Class / Patent application number | Description | Number of patent applications / Date published |
408145000 | TOOL HAVING CRYSTALLINE CUTTING EDGE | 10 |
20090136308 | Rotary Burr Comprising Cemented Carbide - A rotary burr comprising cemented carbide for removing material from a workpiece includes a shank and a working portion and a shank. A surface of the working portion includes a plurality of right-handed helically oriented flutes that define a plurality of cutting teeth on the working portion. Each of the plurality of cutting teeth defined by the right-handed flutes includes a front face, a back face, a tip, and a positive front face angle, and lacks a radial land adjacent the tooth tip and at the periphery of the working portion. | 05-28-2009 |
20090269154 | SHEET-STACK CORING - A method of forming a batch of uniformly shaped glass sheet objects is disclosed. A stack of glass sheets is placed in a frame and submerged in a coolant. A hole is drilled through the stack. The cores of the hole and any debris from the drilling process are swept away in the coolant and pumped through a filter. A pin is inserted into the hole and attached to the base. A head on the pin, or a washer, fixes the stack of glass to the base at the hole. An outer profile is then cut in the glass stack around the hole while the formed objects are held to a base of the frame by the pin. Again, any debris is swept away in the coolant. The uniformly shaped objects are removed from the frame and separated. The glass sheet objects are preferably usable as a substrate for a magnetic or magneto-optical (MO) data/information storage retrieval medium. | 10-29-2009 |
20100143058 | INSERT - An insert attached to a tool body of a hole machining tool having an attachment seat and a pressing member for pressing the insert to adjust the position of a peripheral cutting edge in a diameter direction of the tool. The insert has a panel shape. One surface of the insert in a thickness direction provides a seating surface, the other surface in the thickness direction provides a peripheral flank surface. A surface facing the rear side of the insert in a tool rotation direction provides a pressed surface in a state that the insert is attached to the attachment seat. A side surface facing the front side in the tool rotation direction provides an inclined surface, and a peripheral cutting edge is formed at a ridge portion outside of the inclined surface in the diameter direction of the tool. | 06-10-2010 |
20110286810 | POLYCRYSTALLINE DIAMOND ABRASIVE ELEMENTS - A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The polycrystalline diamond abrasive element is characterised by the nonplanar interface having a cruciform configuration, the polycrystalline diamond having a high wear-resistance, and the polycrystalline diamond having a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The polycrystalline diamond cutters have improved wear resistance, impact strength and cutter life than prior art cutters. | 11-24-2011 |
20120183367 | DRILL - A drill for producing a drilled hole in work pieces has at least one main cutting edge on an end face. At least one secondary cutting edge is provided in the region of a circumferential surface of the drill. At least one circularly ground land circumferentially adjoins the at least one secondary cutting edge. The circularly ground lands extend over a first longitudinal section in the front area of the secondary cutting edge. In a following second longitudinal section, a secondary flank circumferentially adjoins the secondary cutting edge. | 07-19-2012 |
20120251256 | CUTTING TOOL FOR CONTROL OF SURFACE ROUGHNESS - A reamer reams a tapered hole in a casting to provide a desired surface roughness of the walls defining the tapered hole. The reamer includes a shank having at least one cutting tool of diamond material, the cutting face extends along a tapered length to a length corresponding to the length of the tapered hole. The cutting face has a plurality of undulations along the cutting face. The undulations include alternating crests and troughs that machine the walls of the tapered hole and provide thereon a surface roughness within desired limits of surface roughness. | 10-04-2012 |
20130022421 | ABRASIVE CORING BIT - A coring bit accessory for a rotary tool is provided herein, including a shank for coupling with a rotary tool, a body including a generally cylindrical structure having a proximal end portion defining a leading rim, an abrasive ring bonded to or incorporated into the leading rim, and at least one abrasive strip bonded to or incorporated into the body and extending from the proximal end portion to the distal end of the body. | 01-24-2013 |
20130164088 | DRILL FOR COMPOSITE MATERIALS - An improved drill is provided with a negative rake angle, a positive flute rake angle, and a positive relief angle. The drill may include a chip breaker disposed within a flute along the shank of the drill. | 06-27-2013 |
20140037393 | BIT FOR A ROTARY DRILL - A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a width that varies along the length of the cylindrical land. | 02-06-2014 |
20140186132 | TWIST DRILL TIPS, PRECURSOR CONSTRUCTIONS FOR USE IN MAKING SAME, AND METHODS FOR MAKING AND USING SAME - A tip for twist drill, comprising a super-hard structure joined to a substrate at an interface boundary coterminous with an end of the substrate, the super-hard structure comprising sintered polycrystalline material comprising super-hard grains, the super-hard structure defining a super-hard end surface opposite the interface boundary and a plurality of cutting edges configured for boring into a body in use; the super-hard end surface including a centre point or chisel edge, and comprising a plurality of surface regions configured such that respective planes tangential to each of the surface regions are disposed at substantially different angles from the axis of rotation of the tip in use. Precursor constructions for use in manufacturing the tips as well as methods for making the precursor constructions and the tips are disclosed. | 07-03-2014 |